Trocar



Feb. 2, 1954 R. E. STONE TROCARQ Filed May a, 1950 m m M M m M o A 5 E QN E w E Q a) 0 Q 1 v ht R m t m WWW-M QM. Q M w mm m a Y B Patented Feb.2, 1954 UNI-TE D STATES @FEF 2,667,682.;

TROCAR Richard E. Stone, Cocoa, Fla. Application May 8, 1950, SeriarNri:160305 1 Claim.

This invention relates to the class of surgical instruments and moreparticularly to an improved trocar for use in embalming.

An object of this invention is to provide a trocar which will includemeans for preventing the suction tube thereof from becoming choked dueto the lack of fluid flow and the consequential suction of solidsubstances into the passageway of the suction tube.

Another object of this invention is to provide a trocar having simplemeans for the detachment of the various elements of the embalminginstrument so that it may be readily and thoroughly cleaned and easilystored in a relatively small compass.

Still another object of this invention is to provide an embalminginstrument or trocar having a vent tube in communication with a suctiontube, the vent tube being controlled by a valve adjacent the handlewhich is secured to the suction tube of the instrument in order that thedevice may be easily and accurately controlled.

Still further objects of the invention reside in the provision of atrooar that is highly emcient in operation, simple in construction anddesign, and comparatively inexpensive to produce.

These, together with the various ancillary objects of the inventionwhich will become apparent as the following description proceeds, areattained by this trocar, a preferred embodiment of which has beenillustrated in the accompanying drawings, by way of example only,wherein:

Figure 1 is a side elevational view of the trocar comprising the presentinvention;

Figure 2 is a longitudinal sectional view of the embalming instrument;

Figure 3 is a vertical sectional View as taken along line 33 in Figure 2and Figure 4 is a vertical sectional view as taken along line 44 inFigure 2.

With continuing reference to the accompanying drawings, wherein likereference numerals designate similar parts throughout the various views,the reference numeral It generally designates an elongated cylindricaltube having a longitudinally extending passageway l2 therethrough andhaving an externally threaded end I4 and an internally threaded end H5.Secured to the externally threaded end Hi of the cylindrical member inis a handle member is which is formed with a suitable grip surface andwith an anchor surface 2i! for securing thereon a rubber hose, or thelike, which is attached to suitable suction means, such as a pump orother like device. As. can be readily seen, the handle 18 is providedwith a passageway 22 which is in communication with the passageway l2.

An externally threaded head 24 is readily engaged in the internallythreaded end It and is provided with a pointed edge 26 so as to enable amore satisfactory insertion of the instrument. There are provided aplurality of spaced apertures 28 in the cylindrical member H3 in orderthat the fluid to be aspirated can be withdrawn therethrough. Theseapertures are in communication with the longitudinally extendingpassageway I2.

An elongated tubular member 30 having a passageway 32 therein ispositioned alongside the cylindrical member I 0 and at one end isprovided with a portion 34 which passes through an opening in thecylindrical member l0 and thus permits communication betweenthe'passageway 32 and the passageway l2. The other end of the member 30is curved as at 35 so that a readily available finger grip can beprovided for aiding in the withdrawal of the device from the bodycavity. However, this curvilinear portion is also provided in order tomore adequately position the valve 36 adjacent the handle I8 in orderthat the valve may be in position for easier control by the operatorshand.

Obviously, with the threaded portion 24 of the instrument in a bodycavity and upon the application of suction to the handle l8, the fluidwill be sucked through the passageway 12 and the passageway 22. However,after evacuation of all of the fluid, or the fluid that is readilyavailable about the headed portion of the instrumention, there will be atendency to withdraw heavier matter due to the action of the vacuum.Hence, the tube 30 will supply air as a substitute for the body fluid inorder to eliminate the possi bility of the passageway l 2 from becomingchoked up. Upon the application of suction, any obstruction in thelength of the passageway l2 will be readily blow therefrom due to theflow of air.

Since, from the foregoing, the construction and advantages of thistrocar are readily apparent, further description is believed to beunnecessary.

However, since numerous modifications and changes will readily occur tothose skilled in the art after a consideration of the foregoingspecification and accompanying drawings, it is not intended to limit theinvention to the precise embodiment shown and described, but allsuitable modifications and equivalents may be resorted to, fallingwithin the scope of the appended claim.

Having described the invention, what is claimed as new is:

A trocar comprising a tube, a tubular handle on one end portion of saidtube communicating therewith, the other end portion of the tubehaving aplurality of intake ports therein, a closure in said other end portionof the tube, a vent pipe mounted longitudinally and exteriorly on thetube and communicating therewith at said other end portion thereof, saidvent pipe terminating in a substantially U-shaped inner end portion freeof the tube and extending angularly thereacross and providing a fingergrip adjacent the handle, and a manually actuated control valve on theinner end of the vent pipe operable from the handle.

RICHARD E. STONE.

References Cited in the file of this patent UNITED STATES PATENTS NumberNumber Name Date Hardin May 6, 1884 Freeman Feb. 4, 1908 Thorhaug Feb.8, 1921 Slaughter Feb. 16, 1932 Peterson Oct. 26, 1937 Cooley Nov. 15,1938 FOREIGN PATENTS Country Date Great Britain Mar. 6, 1923

